10 citations · 32 across the 11 of their papers we have counts for
12 papers
Multipolar optical binding in focus
Ashutosh Shukla, Sneha Boby, G V Pavan Kumar
The optical binding of gold nanoparticles has conventionally been explored within the Rayleigh limit using dipole approximations. But the field is increasingly focusing on the Mie…
C.V. Raman's Exploration in Optics -- A Spectrum of History
G. V. Pavan Kumar
C.V. Raman (1888-1970) was one of the pioneering scientists to have emerged from India during the colonial era. His scientific explorations were driven by his curiosity to understa…
Evanescent Optothermoelectric Trapping: Deeper Potentials at a Largescale
Chaudhary Eksha Rani, Rahul Chand, Ashutosh Shukla +1
Surface plasmons (SP) and their mediated effects have been widely used to manipulate micro- and nanoscale objects of dielectric and metallic nature. In this work, we show how SP ex…
Probing the Relationship between Defects and Enhanced Mobility in MoS2 Monolayers Grown by Mo Foil
Sudipta Majumder, Vaibhav Walve, Rahul Chand +5
Atomic vacancies, such as chalcogen vacancies in 2D TMDs, are important in changing the host material's electronic structure and transport properties. We present a straightforward…
C.V. Raman as a Science Communicator: A Historical Perspective
G. V. Pavan Kumar
C.V. Raman (1888 - 1970) was a creative scientist, enthusiastic teacher and a science celebrity in India. In all these roles, he communicated science effectively. In this essay, I…
Emergence Of Directional Rotation In Optothermally Activated Colloidal System
Rahul Chand, Chaudhary Eksha Rani, Diptabrata Paul +1
We experimentally demonstrate the emergence of directional rotation in thermally active-passive colloidal structures under optical confinement. The observed handedness of rotation…
Opto-thermoelectric trapping of Fluorescent Nanodiamonds on Plasmonic Nanostructures
Ashutosh Shukla, Sunny Tiwari, Ayan Majumder +2
Deterministic optical manipulation of fluorescent nanodiamonds (FNDs) in fluids has emerged as an experimental challenge in multimodal biological imaging. Designing and developing…
Optothermal evolution of active colloidal matter in defocused laser trap
Diptabrata Paul, Rahul Chand, G V Pavan Kumar
Optothermal interaction of active colloidal matter can facilitate environmental cues which can influence the dynamics of active soft matter systems. The optically induced thermal e…
Mirror-Coupled Microsphere can narrow the Angular distribution of Photoluminescence from WS2 Monolayers
Shailendra K. Chaubey, Sunny Tiwari, Gokul M. A. +3
Engineering optical emission from two dimensional, transition metal dichalcogenides (TMDs) materials such as Tungsten disulphide (WS2) has implications in creating and understandin…
Optothermal pulling, trapping, and assembly of colloids using nanowire plasmons
Vandana Sharma, Sunny Tiwari, Diptabrata Paul +3
Optical excitation of colloids can be harnessed to realize soft matter systems that are out of equilibrium. In this paper, we present our experimental studies on the dynamics of si…
Mirror enhanced directional out-coupling of SERS by remote excitation of a nanowire-nanoparticle cavity
Sunny Tiwari, Adarsh B Vasista, Diptabrata Paul +1
We report on the experimental observation of mirror enhanced directional surface enhanced Raman scattering (SERS) from a self-assembled monolayer of molecules coupled to a nanowire…
Doughnut shaped emission from vertical organic nanowire coupled to thin plasmonic film
Adarsh B. Vasista, Ravi P. N. Tripathi, Shailendra K. Chaubey +2
Vertical nanowires facilitate an innovative mechanism to channel the optical field in the orthogonal direction and act as a nanoscale light source. Subwavelength, vertically orient…